Spermatozoa structure
Sperm metabolism
Sperm transport in the male tract
Epididymal Function
Hormonal control of the epididymis
Ejaculate Characteristics - Fractions
Species |
Time lapse for ejaculation |
Composition of Ejaculate |
---|---|---|
Bull | 1 second | single fraction |
Ram | 1 second | single fraction |
Boar | 5-25 minutes |
fractionated
|
Stallion | 30-60 seconds |
fractionated
|
Man | 10-30 seconds | single fraction but coagulated |
Components of Bull Semen
Initial semen evaluation
Ejaculate Characteristics - specifications
Species | Ejaculate Volume (ml) | Sperm Concentration (X 109/ml) | Total Sperm per Ejaculate (109) | % Motile | % Normal |
---|---|---|---|---|---|
Bull | 8.0 | 1.5 | 12 | 75 | 95 |
Ram | 1.0 | 3.0 | 3 | 95 | 95 |
Boar | 200 | .25 | 50 | 70 | 90 |
Stallion | 80 | .15 | 12 | 70 | 40 - 90 |
Man | 2-6 | .15 | .9 | 65 | 30 - 70 |
Impact of Heat on Spermatogenesis